JPH03225136A - Air conditioner - Google Patents

Abstract

PURPOSE:To prevent the overflowing of a surplus drain water stored in a water reservoir, by providing an air vent pipe on a return pipe which returns surplus drain water to a drain pan from the water reservoir. CONSTITUTION:Under a furious stormy weather, when a heating operation is performed, drained water 62 is introduced to a reservoir 14 by the working of a drain pump 28 via a pipe 18, and is returned to an outdoor drain pan 27 via a return pipe 17. At this time, air in an air reservoir 63 installed inside a return pipe 17 is discharged by a drained water introduced to the return pipe 17 into a chamber on the room side via an air vent pipe 19, and the drain water is returned smoothly to an outdoor drain pan 27. Of course, a fixed am ount of drained water in the reservoir 14, is led from a first receiving part 38 through a water conduit to a sprayer 13 by the capillarity, and sprayed on the indoor heat exchanger 12. Because of this construction, even there exists an air reservoir 63 in the return pipe 17, air is discharged through an air vent 19, and there is no fear that the drained water overflows the reservoir 14.

Description

[Detailed Description of the Invention] (a) Industrial Application Field The present invention provides an air humidifier that humidifies an indoor room by sprinkling drain water generated in an outdoor heat exchanger during heating operation onto an indoor heat exchanger. Regarding the harmonizer.

(b) Prior Art Conventionally, an air conditioner that uses drain water to humidify a room during heating operation has been disclosed in Japanese Patent Laid-Open No. 1-131838.

According to this content, drain water generated in an evaporator (outdoor heat exchanger) is received by a drain pan and stored in a reservoir by a pump. Inside this reservoir, a pipe that leads drain water to a condenser (indoor heat exchanger) is located at the bottom, and a return pipe that leads drain water to a drain pan is located above a certain height. When the drain water level is below a certain level, all of this drain water is led to the indoor heat exchanger via the pipe, and on the other hand, when the drain water level is above a certain level, this increased amount of drain water is The water flows into the return pipe and is returned to the aforementioned drain pan.

(8) Problems to be solved by the invention If such an air conditioner is installed, for example, in a window and operated for heating during strong wind and rain (commonly known as the 1st hurricane test), the following risks may occur: There is. That is,
When the operation is stopped, the tip of the return pipe is immersed in drain water collected in the drain pan. Therefore, the tip of the return pipe is blocked with drain water, and an air pocket is created from the middle of the return pipe to the reservoir. If a hurricane test is conducted under these conditions, even if the drain water is pumped up, rainwater will enter the drain pan, so the level of the drain water will not drop and the air pockets in the return vibrator may not disappear. On the other hand, although the drain water pumped up by the pump is guided to the reservoir, the above-mentioned air pockets make it difficult for excess drain water from the reservoir to flow into the return pipe. This excess drain water sometimes overflowed from the reservoir. Also, depending on the weight of the excess drain water, the excess drain water and the air pocket may replace each other.
At this time, this air blows out from the surplus drain water, and this blowout sometimes causes the surplus drain water to overflow from the reservoir.

The object of the present invention is to promptly guide surplus drain water in a reservoir to a drain pan, thereby making it difficult for the surplus drain water to overflow from the reservoir.

(2) Means for Solving the Problems In order to achieve this object, the present invention provides an air vent pipe in the return pipe connected to the reservoir and returning excess drain water to the drain pan.

(f) Function Even if an air pocket occurs in the return pipe, the drain water in the reservoir flows into this return pipe, so this air pocket escapes from the air vent pipe, and the drain water in this reservoir flows smoothly into the drain pipe. flows to

(F) Embodiment An embodiment of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes an air conditioner that is installed through a wall, and its outer box is composed of an outer case 2 and a decorative case 3. This outer box houses a bottom plate 4 that is inserted by sliding on the bottom surface of the outer case 2.

Reference numeral 5 denotes a casing provided on the bottom plate 4, which has a partition plate 8 that partitions the inside of the outer box into an indoor chamber 6 and an outdoor chamber 7, and has a built-in cross flow fan 9 for indoor use.

In this indoor chamber 6, an indoor drain pan 10 is provided on the bottom plate 4 and has a drain port 11 communicating with the outdoor chamber 7;
Reference numeral 2 denotes an indoor heat exchanger attached to the front part of the casing 5 and disposed on this indoor drain pan, which acts as an evaporator during cooling operation and as a condenser during heating operation. 13 is a water sprinkler placed on the indoor heat exchanger 12, and 14 is a reservoir fixed to the side surface 15 of the casing 5 above the water sprinkler. This reservoir 14 has a water sprinkler 1
3, a return pipe 17 leading to the outdoor chamber 7, and a second pipe 1 from the outdoor chamber 7.
8 is provided. Reference numeral 19 denotes an air vent pipe attached upward to the horizontal part of the return pipe 17, and the upper end 20
is raised to the height of the reservoir 14 and time.

Then, by the rotation of the cross flow fan 9, indoor air is sucked into the indoor heat exchanger 1 through the suction port 21 of the cosmetic case 3.
After being heated or cooled in step 2, this indoor air is blown out into the room 23 from the outlet 22 of the decorative case 3.

On the other hand, in the outdoor room 7, 24 is a propeller fan;
5 is a motor for driving this propeller fan 24; 26 is an outdoor heat exchanger that acts as a condenser during cooling operation and as an evaporator during heating operation; 27 is an outdoor drain pan with a part of the bottom plate recessed; Indoor heat exchanger 12 during operation
Drain water generated in the room and flowing into the outdoor room 7 from the drain port 11 of the indoor drain pan 10 is stored, and on the other hand, drain water generated and dripped in the outdoor heat exchanger 26 during heating operation is stored. Reference numeral 28 denotes a drain pump disposed in the outdoor drain pan 27, and this pump 28 and the reservoir 14 are connected by a second pipe 18.

Then, as the propeller fan 24 rotates, outdoor air is sucked in through suction ports (not shown) provided on both sides of the outdoor heat exchanger 26, cooled or heated by the outdoor heat exchanger 26, and then discharged from the discharge port 29 to the outside 30. Let it drain.

2 to 4 are a perspective view and a sectional view of the reservoir 14. The reservoir 14 has a mounting piece 31 on its bottom surface and is attached to the side surface 15 of the casing 5 (see FIG. 1).

This reservoir 14 has a right corner of its bottom surface 32 raised up, and a cylindrical first connection port 34 extending further upward from this raised surface 33 is formed. A return vibrator 17 (see FIG. 1) is connected to this first connection port 34.

35 is a second connection port provided on the side surface of the reservoir 14, and a second vibrator 18 (see FIG. 1) is connected to the second connection port 35. 36 is a third connection port provided at a corner of the bottom surface of the reservoir 14, and the first vibrator 16 (see FIG. 1) is connected to this third connection port 36. A dam 37 surrounds the third connection port 36 and projects upward from the bottom surface 32 and the rising surface 33 of the reservoir 14. By this weir 37, the reservoir 14
Inside is the first port where the first and second connection ports 34.35 are located.
and the second receiving portion 3 where the third connection port 36 is located.
It is divided into 9. A pin 40 is formed in this second receiving portion 39 as shown in FIG. 41 is this weir 3
7, an inverted U-shaped water guide portion (water guide piece) 42 is formed on one side, and a mounting hole 43 is formed on the other side. There are three water guide parts 42, and the pin 40
When this mounting hole 43 is inserted, its cross-sectional shape becomes as shown in FIG. 4.

In other words, the distance between the inverted U-shaped water guide portion 42 and the weir 37 is 0.11.
The water guide portion 42 straddles the weir 37 while maintaining a gap a of about 1111 to 0.51E.

The drain water accumulated in the outdoor drain pan 27 is pumped up by the drain pump 28 and is poured into the first receiving part 38 of the reservoir 14 from the second connection port 35 via the second vibrator 18. Out of the drain water poured into the first receiving part 3B, drain water other than a certain amount (described later) (excess drain water) is returned from the return vibrator 17 to the outdoor drain pan 27 via the first connection port 34. . Here, the second connection port 35
Drain water flowing into the reservoir 14 from the first connection port 34 is forcibly fed by the drain pump 28, whereas drain water flowing out from the first connection port 34 is caused to flow down by its own weight. Therefore, the amount of drain water flowing into the reservoir 14 is greater than the amount of drain water flowing out from the reservoir 14, and the water level 44 in the reservoir 14 is at the third level.
As shown in the figure and FIG. 4, it is stabilized at a height slightly lower than the height of the weir 37. The height of this water level 44 is the height of one end 4 of the water guide section 42.
It will be higher than the height of 5. When this happens, drain water 46 is sucked up by capillary action into the gap a between the weir 37 and the water guide section 42, and the sucked drain water becomes a drop 48 from the other end 47 of the water guide section 42, and is transferred to the second receiver. Flows into section 39. At this time, even if the drain water that has flowed into the reservoir 14 is contaminated with dust, this dust settles on the bottom surface 32 inside the reservoir 14 and flows to the second receiving part 39, that is, the indoor heat exchanger 12. There is no such thing. Even if garbage should become clogged in the gap a between the water guide section 42 and the weir 37, the clogged area is only a part of the elongated gap, so the drain water 46 will be sucked up by capillary action from areas other than the clogged area. , the drain water 46 is reliably drained into the second receiving portion 39.
The water is then introduced to the indoor heat exchanger 12 via a water sprinkler 13.

5 and 6 are a perspective view and a sectional view of the water sprinkler 13 described above, and 50 is a water inlet provided on the side of the water sprinkler 13, to which the first vibrator 16 (see FIG. 1) is connected. Ru. 5
1 is a horizontally elongated through hole provided in the longitudinal direction of this water sprinkler 13, 52 is a weir raised above this opening, and this weir 5
The through hole 51 is surrounded by 2. This through hole 51
There is a rib 53 connecting the weirs in the short direction, and a mounting pin 54 is formed. Reference numeral 55 denotes a water guiding member located in this through hole 51, and this member 55 includes a mounting piece 56 and an inverted U-shaped water guiding portion 57 protruding from both sides of this mounting piece 56.
and mounting holes 58 formed at both ends of the mounting piece 56. There are five such water guiding members 55 (one in the figure).
When the water guiding member 55 is assembled to the sprinkler 13 by inserting the mounting holes 58 of each member 55 into the mounting pins 54, the cross-sectional shape becomes as shown in FIG. In other words, the distance between the inverted U-shaped water guide portion 57 and the weir 52 is 0.1 f.
A gap of f11 to 0.31111 is maintained.

In this sprinkler 13, when drainage water flows into the sprinkler 13 from the water inlet 50, the drain water flows along the weir 52. In this way, the drain water 59 is added to the water sprinkler 13.
When water accumulates, the water level of this drain water 59 becomes higher than the lower end of the water guide portion 57, as shown in FIG. When this happens, drain water 59 is sucked up into the gap between the weir 52 and the water guide section 57 by capillary action, and the sucked up drain water becomes drops 60 from the water guide section 57 and is transferred to the indoor heat exchanger 12.
It is dripped into.

Further, there are a total of 70 such water guide portions 57, and therefore approximately 70 drops 60 are dropped onto the indoor heat exchanger 12, and the indoor heat exchanger 12 is uniformly sprinkled with drain water.

In this air conditioner 1, when heating operation is performed and the outdoor heat exchanger 26 acts as an evaporator, the drain water generated in the outdoor heat exchanger 26 is sucked up by the drain pump 28, and is drawn up by the solid line in FIG. 2nd pipe 18 as shown by the arrow
through which it is led to the reservoir 14. Excess drain water out of the drain water guided into the reservoir 14 is returned to the outdoor drain pan 27 via the return vibrator 17. At the same time, only a certain amount of drain water in the reservoir 14 is transferred to the water guide section 4.
2 into the second receiving part 39 of this reservoir 14 by capillary action. As a result, the tenth receiving portion 38
Dust etc. inside are not guided to the second receiving portion 39 (see FIG. 4). In this way, a certain amount of drain water is led from the reservoir 14 to the water sprinkler 13 via the first vibrator 16, and the indoor heat exchanger 12 is sprinkled with the drain water by the method described above. Therefore, the amount of drain water sprinkled on the indoor heat exchanger 12 is unlikely to change significantly, and by spraying this drain water on the indoor heat exchanger 12, the temperature of the indoor heat exchanger 12 decreases. This keeps the decline in heating capacity to a minimum.

Next, a case will be described in which the air conditioner 1 is operated for heating during strong winds and rain (a hurricane test is conducted). First, drain water is stored in the outdoor drain pan 27.
The tip 61 of the return vibrator 17 is immersed in this drain water 62. As a result, the return vibe 17 has an air pocket 63.
is formed. Furthermore, rainwater has entered the air conditioner 1 as shown in FIG. When the heating operation is started in this state, the drain water 62 is guided to the reservoir 14 via the second vibrator 18 by the operation of the drain pump 28. As described above, the drain water introduced into the reservoir 14 is returned to the outdoor drain pan 27 via the return vibrator 17. At this time, there is an air pocket 63 in the return vibe 17;
The drain water led to is drained into the royal inner chamber 6 through the air venting vibrator 19, and the drain water is smoothly returned to the outdoor drain pan 27. Of course, a certain amount of drain water in the reservoir 14 flows through the water guide section 42 and is first drained by capillary action.
from the receiving part 38 to the water sprinkler 13, and the indoor heat exchanger 1
Water is sprinkled on 2. In this way, even if there is an air pocket 63 in the return vibrator 17, this air pocket 63 will escape from the air vent pipe 19 as the drain water flows into the return vibrator 17, so there is no risk of air blowing out into the reservoir 14. Drain water overflows from the reservoir 14 and the air conditioner 1
This prevents this drain water from splashing on internal parts, etc.

(G) Effects of the Invention As described above, the present invention is equipped with an air venting vibe on the return vibe that is connected to the reservoir and returns excess drain water to the drain pan, so that the drain water in the reservoir flows into this return vibe. As a result, this air pocket escapes from the air venting vibrator, and the drain water in this reservoir flows smoothly into the drain pan, thereby preventing excess drain water from overflowing from the reservoir.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention; FIG. 1 is a cross-sectional view of an air conditioner, FIG. 2 is a partially cutaway perspective view of a reservoir, and FIG. 3 is a cross-sectional view of a drain reservoir. Figure 4 is the W of Figure 2.
5 is an exploded perspective view of the water sprinkler, and FIG. 6 is a sectional view of the water sprinkler. 1... Air conditioner, 12... Condenser (indoor heat exchanger), 13... Water sprinkler, 4... Reservoir, 17... Return vibe, 19... Air venting vibe, 26... Evaporator (outdoor heat exchanger), 2
7...(outdoor side) drain pan.

Claims (1)

[Claims] 1) A drain pan that receives drain water dripping from the evaporator, a reservoir that pumps up and temporarily stores the drain water received by the drain pan, and a water sprinkler that sprinkles the drain water in the reservoir to the condenser. In an air conditioner equipped with
An air conditioner characterized in that the reservoir is provided with a return pipe for returning surplus drain water in the reservoir to the drain pan, and the return pipe is provided with an air vent pipe, respectively.